get writer via getter

logb.go

@@ -9,6 +9,10 @@ import (
 var level Level = INFO
 var writer io.Writer = os.Stderr
 
+func Writer() io.Writer {
+	return writer
+}
+
 func Set(l ...Level) {
 	if len(l) < 1 {
 		l = []Level{INFO}